74 DISCOVERY REPORTS 



distinguish in preserved material, and up to this point in development it is not possible 

 to make out the articulation of either endopod or exopod with the basal portion of the 

 limb. Another feature which tends to give a confused idea of the number of segments in 



I II III IV V VI I II III IV V 



Fig. 1 6. First Furcilia (continued). 



a, thoracic limbs II-VI of larva with 2 non-setose pleopods ( x 35); 



b, thoracic limbs II-VI of larva with 3 non-setose pleopods ( x 35); 



c, thoracic limbs II-VI of larva with 4 non-setose pleopods ( x 35); 



d, thoracic limbs I-VI of larva with 5 non-setose pleopods ( x 35); 



e, pleopods I and II of larva with 2 non-setose pleopods ( x 35); 

 /, pleopods I-III of larva with 3 non-setose pleopods ( x 35); 



g, pleopods I-IV of larva with 4 non-setose pleopods ( x 35); 

 h, pleopods I-V of larva with 5 non-setose pleopods ( x 35). 



a limb is that, presumably just prior to moulting, the segmentation of the limb in the 

 following stage is sometimes apparent through the existing integument, and when the 

 joint in the existing integument does not coincide with that of the following stage the 



